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author | Yin Huai <yhuai@databricks.com> | 2015-02-12 15:17:25 -0800 |
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committer | Michael Armbrust <michael@databricks.com> | 2015-02-12 15:17:25 -0800 |
commit | c352ffbdb9112714c176a747edff6115e9369e58 (patch) | |
tree | 5f46171bf3768b4c8aefbe4449db333d06a32862 /sql/core | |
parent | 0bf031582588723dd5a4ca42e6f9f36bc2da1a0b (diff) | |
download | spark-c352ffbdb9112714c176a747edff6115e9369e58.tar.gz spark-c352ffbdb9112714c176a747edff6115e9369e58.tar.bz2 spark-c352ffbdb9112714c176a747edff6115e9369e58.zip |
[SPARK-5758][SQL] Use LongType as the default type for integers in JSON schema inference.
Author: Yin Huai <yhuai@databricks.com>
Closes #4544 from yhuai/jsonUseLongTypeByDefault and squashes the following commits:
6e2ffc2 [Yin Huai] Use LongType as the default type for integers in JSON schema inference.
Diffstat (limited to 'sql/core')
3 files changed, 17 insertions, 13 deletions
diff --git a/sql/core/src/main/scala/org/apache/spark/sql/json/JsonRDD.scala b/sql/core/src/main/scala/org/apache/spark/sql/json/JsonRDD.scala index 1043eefcfc..7dfb304021 100644 --- a/sql/core/src/main/scala/org/apache/spark/sql/json/JsonRDD.scala +++ b/sql/core/src/main/scala/org/apache/spark/sql/json/JsonRDD.scala @@ -17,13 +17,12 @@ package org.apache.spark.sql.json -import java.io.StringWriter -import java.sql.{Date, Timestamp} +import java.sql.Timestamp import scala.collection.Map import scala.collection.convert.Wrappers.{JMapWrapper, JListWrapper} -import com.fasterxml.jackson.core.{JsonGenerator, JsonProcessingException, JsonFactory} +import com.fasterxml.jackson.core.{JsonGenerator, JsonProcessingException} import com.fasterxml.jackson.databind.ObjectMapper import org.apache.spark.rdd.RDD @@ -178,7 +177,12 @@ private[sql] object JsonRDD extends Logging { } private def typeOfPrimitiveValue: PartialFunction[Any, DataType] = { - ScalaReflection.typeOfObject orElse { + // For Integer values, use LongType by default. + val useLongType: PartialFunction[Any, DataType] = { + case value: IntegerType.JvmType => LongType + } + + useLongType orElse ScalaReflection.typeOfObject orElse { // Since we do not have a data type backed by BigInteger, // when we see a Java BigInteger, we use DecimalType. case value: java.math.BigInteger => DecimalType.Unlimited diff --git a/sql/core/src/test/java/org/apache/spark/sql/api/java/JavaApplySchemaSuite.java b/sql/core/src/test/java/org/apache/spark/sql/api/java/JavaApplySchemaSuite.java index 2e6e977fdc..643b891ab1 100644 --- a/sql/core/src/test/java/org/apache/spark/sql/api/java/JavaApplySchemaSuite.java +++ b/sql/core/src/test/java/org/apache/spark/sql/api/java/JavaApplySchemaSuite.java @@ -164,7 +164,7 @@ public class JavaApplySchemaSuite implements Serializable { fields.add(DataTypes.createStructField("bigInteger", DataTypes.createDecimalType(), true)); fields.add(DataTypes.createStructField("boolean", DataTypes.BooleanType, true)); fields.add(DataTypes.createStructField("double", DataTypes.DoubleType, true)); - fields.add(DataTypes.createStructField("integer", DataTypes.IntegerType, true)); + fields.add(DataTypes.createStructField("integer", DataTypes.LongType, true)); fields.add(DataTypes.createStructField("long", DataTypes.LongType, true)); fields.add(DataTypes.createStructField("null", DataTypes.StringType, true)); fields.add(DataTypes.createStructField("string", DataTypes.StringType, true)); diff --git a/sql/core/src/test/scala/org/apache/spark/sql/json/JsonSuite.scala b/sql/core/src/test/scala/org/apache/spark/sql/json/JsonSuite.scala index fde4b47438..b5f13f8bd5 100644 --- a/sql/core/src/test/scala/org/apache/spark/sql/json/JsonSuite.scala +++ b/sql/core/src/test/scala/org/apache/spark/sql/json/JsonSuite.scala @@ -222,7 +222,7 @@ class JsonSuite extends QueryTest { StructField("bigInteger", DecimalType.Unlimited, true) :: StructField("boolean", BooleanType, true) :: StructField("double", DoubleType, true) :: - StructField("integer", IntegerType, true) :: + StructField("integer", LongType, true) :: StructField("long", LongType, true) :: StructField("null", StringType, true) :: StructField("string", StringType, true) :: Nil) @@ -252,7 +252,7 @@ class JsonSuite extends QueryTest { StructField("arrayOfBigInteger", ArrayType(DecimalType.Unlimited, false), true) :: StructField("arrayOfBoolean", ArrayType(BooleanType, false), true) :: StructField("arrayOfDouble", ArrayType(DoubleType, false), true) :: - StructField("arrayOfInteger", ArrayType(IntegerType, false), true) :: + StructField("arrayOfInteger", ArrayType(LongType, false), true) :: StructField("arrayOfLong", ArrayType(LongType, false), true) :: StructField("arrayOfNull", ArrayType(StringType, true), true) :: StructField("arrayOfString", ArrayType(StringType, false), true) :: @@ -265,7 +265,7 @@ class JsonSuite extends QueryTest { StructField("field1", BooleanType, true) :: StructField("field2", DecimalType.Unlimited, true) :: Nil), true) :: StructField("structWithArrayFields", StructType( - StructField("field1", ArrayType(IntegerType, false), true) :: + StructField("field1", ArrayType(LongType, false), true) :: StructField("field2", ArrayType(StringType, false), true) :: Nil), true) :: Nil) assert(expectedSchema === jsonDF.schema) @@ -486,7 +486,7 @@ class JsonSuite extends QueryTest { val jsonDF = jsonRDD(complexFieldValueTypeConflict) val expectedSchema = StructType( - StructField("array", ArrayType(IntegerType, false), true) :: + StructField("array", ArrayType(LongType, false), true) :: StructField("num_struct", StringType, true) :: StructField("str_array", StringType, true) :: StructField("struct", StructType( @@ -540,7 +540,7 @@ class JsonSuite extends QueryTest { val expectedSchema = StructType( StructField("a", BooleanType, true) :: StructField("b", LongType, true) :: - StructField("c", ArrayType(IntegerType, false), true) :: + StructField("c", ArrayType(LongType, false), true) :: StructField("d", StructType( StructField("field", BooleanType, true) :: Nil), true) :: StructField("e", StringType, true) :: Nil) @@ -560,7 +560,7 @@ class JsonSuite extends QueryTest { StructField("bigInteger", DecimalType.Unlimited, true) :: StructField("boolean", BooleanType, true) :: StructField("double", DoubleType, true) :: - StructField("integer", IntegerType, true) :: + StructField("integer", LongType, true) :: StructField("long", LongType, true) :: StructField("null", StringType, true) :: StructField("string", StringType, true) :: Nil) @@ -781,12 +781,12 @@ class JsonSuite extends QueryTest { ArrayType(ArrayType(ArrayType(ArrayType(StringType, false), false), true), false), true) :: StructField("field2", ArrayType(ArrayType( - StructType(StructField("Test", IntegerType, true) :: Nil), false), true), true) :: + StructType(StructField("Test", LongType, true) :: Nil), false), true), true) :: StructField("field3", ArrayType(ArrayType( StructType(StructField("Test", StringType, true) :: Nil), true), false), true) :: StructField("field4", - ArrayType(ArrayType(ArrayType(IntegerType, false), true), false), true) :: Nil) + ArrayType(ArrayType(ArrayType(LongType, false), true), false), true) :: Nil) assert(schema === jsonDF.schema) |